Table 2 Hematological indices by stage versus controls (mean ± SD).

From: Trace element imbalances in selenium and mercury in relation to mammographic density and breast cancer progression: a case‒control study

Parameter

Stage

Control (mean ± SD)

Stage (mean ± SD)

Δ [95% CI]

t(df)

p (scientific)

q (FDR)

Cohen’s d

Hedges’ g

n (ctrl/stage)

Hb (mg/dl)

T-I

12.70 ± 1.21

9.30 ± 0.22

−3.40 [− 3.58 – −3.22]

−36.36 (205.1)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−2.96

−2.95

215 / 25

T-II

 

8.03 ± 0.35

−4.67 [− 4.87 – −4.47]

−46.62 (202.3)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−4.15

−4.14

215 / 38

T-III

 

7.10 ± 0.29

−5.60 [− 5.77 – −5.43]

−64.19 (259.9)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−5.56

−5.55

215 / 105

T-IV

 

5.62 ± 0.38

−7.08 [− 7.26 – −6.90]

−78.94 (281.5)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−7.08

−7.06

215 / 117

Hct

T-I

41.90 ± 1.05

31.90 ± 1.22

−10.00 [− 10.52 – −9.48]

−39.33 (28.3)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−9.36

−9.33

215 / 25

T-II

 

25.90 ± 1.95

−16.00 [− 16.66 – −15.34]

−49.33 (40.9)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−13.06

−13.02

215 / 38

T-III

 

21.50 ± 0.92

−20.40 [− 20.63 – −20.17]

−177.63 (232.6)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−20.21

−20.16

215 / 105

T-IV

 

17.90 ± 1.26

−24.00 [− 24.27 – −23.73]

−175.52 (204.4)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−21.27

−21.22

215 / 117

MCH (pg)

T-I

30.70 ± 0.62

21.50 ± 1.44

−9.20 [− 9.80 – −8.60]

−31.61 (25.0)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−12.35

−12.31

215 / 25

T-II

 

17.30 ± 1.06

−13.40 [− 13.76 – −13.04]

−75.67 (41.6)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−19.08

−19.02

215 / 38

T-III

 

15.70 ± 1.21

−15.00 [− 15.25 – −14.75]

−119.59 (131.3)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−17.47

−17.43

215 / 105

T-IV

 

11.90 ± 0.98

−18.80 [− 19.00 – −18.60]

−188.03 (167.7)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−24.54

−24.48

215 / 117

MCHC (g/dl)

T-I

34.80 ± 0.59

25.60 ± 1.93

−9.20 [− 10.00 – −8.40]

−23.71 (24.5)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−11.09

−11.05

215 / 25

T-II

 

22.70 ± 1.79

−12.10 [− 12.69 – −11.51]

−41.28 (38.4)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−13.80

−13.76

215 / 38

T-III

 

19.20 ± 1.05

−15.60 [− 15.82 – −15.38]

−141.71 (137.0)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−20.23

−20.18

215 / 105

T-IV

 

16.50 ± 1.51

−18.30 [− 18.59 – −18.01]

−125.96 (135.6)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−18.06

−18.01

215 / 117

MCV (fl.)

T-I

93.60 ± 1.45

72.50 ± 2.98

−21.10 [− 22.34 – −19.86]

−34.93 (25.3)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−12.64

−12.60

215 / 25

T-II

 

67.00 ± 1.79

−26.60 [− 27.22 – −25.98]

−86.71 (46.0)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−17.67

−17.62

215 / 38

T-III

 

62.70 ± 2.07

−30.90 [− 31.34 – −30.46]

−137.38 (155.5)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−18.41

−18.37

215 / 105

T-IV

 

58.50 ± 1.99

−35.10 [− 35.51 – −34.69]

−168.05 (184.4)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−21.15

−21.10

215 / 117

RBC (×10¹²/L)

T-I

4.02 ± 0.30

2.79 ± 0.15

−1.23 [− 1.30 – −1.16]

−33.87 (50.3)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−4.26

−4.25

215 / 25

T-II

 

2.25 ± 0.18

−1.77 [− 1.84 – −1.70]

−49.64 (79.0)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−6.20

−6.18

215 / 38

T-III

 

1.83 ± 0.10

−2.19 [− 2.23 – −2.15]

−96.61 (291.4)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−8.67

−8.65

215 / 105

T-IV

 

1.35 ± 0.17

−2.67 [− 2.72 – −2.62]

−103.49 (329.4)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

−10.20

−10.18

215 / 117

Serum ferritin (ng/ml)

T-I

53.90 ± 5.15

112.00 ± 4.98

+ 58.10 [55.94–60.26]

55.01 (30.3)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

11.32

11.28

215 / 25

T-II

 

129.00 ± 3.95

+ 75.10 [73.64–76.56]

102.78 (61.6)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

15.05

15.00

215 / 38

T-III

 

147.00 ± 5.10

+ 93.10 [91.90–94.30]

152.83 (208.3)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

18.14

18.09

215 / 105

T-IV

 

165.00 ± 7.41

+ 111.10 [109.58–112.62]

144.31 (178.3)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

18.39

18.35

215 / 117

TIBC (µg/100 ml)

T-I

293.00 ± 9.52

472.00 ± 25.90

+ 179.00 [168.24–189.76]

34.29 (24.8)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

14.66

14.61

215 / 25

T-II

 

528.00 ± 21.90

+ 235.00 [227.70–242.30]

65.07 (39.5)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

19.32

19.26

215 / 38

T-III

 

593.00 ± 32.90

+ 300.00 [293.51–306.49]

91.58 (112.6)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

14.73

14.69

215 / 105

T-IV

 

685.00 ± 26.90

+ 392.00 [386.92–397.08]

152.51 (132.0)

< 1 × 10⁻¹⁶

< 1 × 10⁻¹⁶

22.15

22.10

215 / 117

  1. p and q values are in scientific notation (×10⁻ⁿ). q denotes FDR-adjusted p values (Benjamini–Hochberg). All comparisons are statistically significant (p < 0.001).